tox: use `deps = .` instead of `pip install` #396

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Python package

	on:
	push:
	branches: ["main"]
	pull_request:
	branches: ["main"]

	jobs:
	build:
	name: Test Python ${{ matrix.python-version }} (${{ matrix.os }})
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, windows-latest, macOS-latest]
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install tox tox-gh-actions
	- name: Test with tox
	run: tox

	test-pre-commit-console-encoding:
	# Ref.: https://github.com/jsh9/pydoclint/issues/20
	name: Test pre-commit console encoding
	runs-on: windows-latest

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.8
	uses: actions/setup-python@v3
	with:
	# This is just a sanity check, so we only run it on one Python version
	# in order to save some time
	python-version: "3.8"
	- name: Run check-self with pre-commit
	run: \|
	python -m pip install --upgrade pip
	python -m pip install pre-commit -e .
	python -m pre_commit run -c .github/.pre-commit-config-self-check.yaml check-self --all

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